Arrangement for regulating the discharge of the hot gases in steamboiler firings



A ril 14, 1931. o. EINSLER ARRANGEMENT FOR REGULATING THE DISCHARGE OF THE HOT GASES IN STEAM BOILER FIRINGS Filed Feb. 19, 1930 Patented Apr. 14, 1931 UNITED STATES OTTO EINSLER, F LEVERKUSEN, GERMANY ARRANGEMENT FOR REGULATING THE DISCHARGE OF THE HOT GASES IN STEAM- BOILER FIRINGS Application filed February 19, 1930, Serial No. 429,782, and in Germany January 25, 1928.

-registers are generally used as shut oil elements, the packing; surfaces or edges of which elements do not close tightly, owing to warping and wear in service, so that a portion ot the hot gases still available for preheating, unintentionally escapes through the registers without being utilized in the heat exchangers, thereby reducing the heat etiiciency degree of the firing plant.

This invention obviates this objection in that a bell or similarly shaped closing-olement, known per se, is used as a shutoff element and consists of a solid bell, plate, disc or the like, the packing edge or surface of which sits like a Valve on its seat surface and ensures an absolutely tight closure, which may be made yielding by a packing material, such as asbestos, sand or the like, arranged in a cavity of the seat surface. The bell is actuated in a suitable manner similarly to the usual registers by chains, rods, shafts or the like, which are suitably protected against the action of the hot gases.

An embodiment oi the invention is illustrated by way of example in the accompany ing drawing, the only figure of which shows diagrannnatically such an arrangement in a steam boiler plant.

In the extreme flue l for the hot gases, which leads the waste gases from the fire box directly to the main flue 2 as illustrated by an arrow in full lines, a bell closure 3 is fitted as-shut oil element, the edge of which bell rests on a seating surface l of channel like cross section owing to its upwardly directed flanges 5 and made yielding by a filling of sand. The hell 3 is reinforced by bows 6 and guided by means of a rod 8 in a transverse bar 7 so that it can be raised and lowered by means of a chain 9. \Vhen the bell is in raised position, the waste gases pass directly into the main fine, whereas, when the bell is lowered, they are diverted in a manner known per so as illustrated by an arrow in broken lines from the fire box, to the heating elements oi which the lower drum 10 of the feed water preheater is shown in the drawing.

In hot gas lines of larger diameter a number of small justaposcd bells may be provided instead of a correspondingly large bell closure. The bell need not be circular, but may be adapted to the cross section shape of the hot gas flue.

I claim:

Means for regulating the discharge of hot gases in a steam boiler firing wherein the firing includes a hot gas flue and a main flue, comprising a shut-oil element in the form of a bell closure disposed between the hot and main fines.

In testimony whereof I afiix my signature.

OTTO EINSLER. 

